US20030002421A1

US20030002421A1 - Optical drive loader with a manual disk ejecting mechanism

Info

Publication number: US20030002421A1
Application number: US09/972,045
Authority: US
Inventors: Chen Ming-Hui; Ming-Shiung Chang
Original assignee: Wistron Corp; Acer Inc
Current assignee: Wistron Corp; Acer Inc
Priority date: 2001-06-29
Filing date: 2001-10-09
Publication date: 2003-01-02
Also published as: US6654335B2; TW526989U

Abstract

The invention presents an optical drive loader with a manual disk ejecting mechanism comprising a frame, a disk receiving apparatus, a speed reduction apparatus, a driving apparatus, and a disk ejecting actuating part. Relying on the disk ejecting actuating part positioned on the frame, which is provided with a gear portion for driving the speed reduction apparatus and a roll stem portion positioned at the center of the gear portion extruding along the central axis. Users can use a tool going through a through hole of the housing turning the roll stem portion to rotate the gear portion and enable the speed reduction apparatus to move the disk receiving apparatus to the feeding/ejecting position. A through hole is disposed on the housing corresponding to the roll stem portion, so as to avoid the through hole being disposed on the operation panel to affect the appearance of the operation panel.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an optical drive loader with a manual disk ejecting mechanism, particularly to a CD player loader which offers a manual disk ejecting mechanism when the electronic controlled disk ejecting mechanism does not operate normally or fails to function.

2. Description of the Prior Art

When compared with the conventional magnetic storage media, Compact disks possess the features that, firstly, compact disks are durable after written the image, music, or electronic data thereon; secondly, compact disks have a longer life than other conventional storage means because the date reading of compact disks is accomplished by lens optics rather than physical reading means used in prior art. Therefore, such optical storage medium has become popular in recent years. More and more compact disks are available in the market.

Conventional designs of CD players, such as a VCD player, a DVD player and the like, the feeding/ejecting mechanism of a CD player can be categorized into two types, one is the tray-in type and the other is the slot-in type. The tray-in type uses a tray, which extends from and retracts back to the-CD player body. Users place a compact disk on the tray (or remove the CD from the tray) when the tray is in extended position. The tray holding the compact disk thereon is received in the CD player body after the tray retracts back. On the other hand, the slot-in type utilizes a disk clamping mechanism in a CD player body. Users insert the compact disks through an insertion slot installed in the housing of the CD player such that the disk clamping mechanism can clip the Compact disks, retract back to the CD player body and proceed to data reading or data reprocessing. When ejecting a disk, the disk clamping mechanism moves toward the insertion slot. The disk is ejected partially at the insertion slot so as to allow the users to remove the CD.

Both in the tray-in type and the slot-in type of feeding/ejecting mechanism, a CD player typically uses integrated circuit (IC) to control the servo-motor for driving the feeding/ejecting mechanism. The IC control operation is powered by electricity. In the absence of a manual disk ejecting mechanism, when the electronic control system does not operate normally or fails to function, the compact disks is held inside the CD player. The process to remove said compact disk involves with disassemble the CD player and cannot be done by a layperson. As a result, if users desire to use said compact disks, they have to seek professional help at a maintenance center. The process may be time consuming and impractical. On the other hand, if users choose to disassemble the CD player on their own, it may result in damage during disassembly and may cost more for the users to have the CD players repaired.

In order to overcome the foregoing problems, i.e. a CD player can not eject the disk when the electronic control system does not operate normally or fails to function, some models are equipped with a manual disk ejecting mechanism. As shown in FIG. 1, a

loader

2 installed in the housing 10 of a CD player is disclosed. Since the feeding/ejecting mechanism of the loader 2 is the emphasis of the present invention, those elements, such as the power supply apparatus, signal processing circuits, etc. are all received inside the housing 10, not relating to the subject matter will not be described in detail hereinafter.

The

loader

2 mainly comprises a frame 21, a tray 22 slidingly coupled to the frame 21, a speed reduction transmission mechanism 23 installed on the frame 21 for driving the tray 22 to move, a driving motor 24 positioned on the frame 21 for driving the speed reduction transmission mechanism 23, wherein the speed reduction transmission mechanism 23 comprises a first gear 231, a second gear 232 moved by the first gear 231, and a third gear 233 moved by the second gear 232 such that the third gear 233 can move a rack 221 correspondingly installed on the tray 22. By means of the actuating gear 241 which is installed on the spindle of the driving motor 24 for driving the first gear 231 to rotate, the speed reduction of the speed reduction transmission mechanism 23, and the rack 221, the tray 22 can transfer the rotation motion of the driving motor 24 into a linear motion with a proper speed.

When operating normally, by means of an electronic control system, one can make the

tray

22 to extend from and retract back to the frame 21 by controlling the rotation direction of the driving motor 24. For preventing the tray 22 from failing to move, which may be caused by the malfunction of the electronic control system, a sector gear 25 positioned on the frame 21 and a spring 251 for maintaining the sector gear 25 at a fixed position are installed and a through hole 11 is positioned on the front panel 101 of the housing 10. When the electronic control system fails to activate the driving motor 24 to move the tray 22, users can stick a slender rod 12 going through the through hole 11 to move the sector gear 25 toward the third gear 233. It follows that the gear end of the sector gear 25 is enabled to move the third gear 233 to rotate a limited angle which is just enough to drive the rack 221 of the tray 22 and cause the tray 22 to extend from the frame 21 a proper length. Consequently, the disk is manually ejected, and users can pull out the tray 22 and pick up the disk on the tray 22.

However, one of the disadvantages of such a manual disk ejecting mechanism is that a

through hole

11 needs to be disposed on the panel 101 of the housing 10 for a slender rod 12 to go through. However, such a through hole 11 may affect the appearance of the entire operation panel 101; moreover a spring 251 needs to be installed for maintaining the sector gear 25 at a fixed position when operating normally so as not to affect the normal rotation of the third gear 233. Such a design obviously needs additional construction parts so that the cost is increased and the assembly becomes difficult.

As shown in FIG. 2, another conventional design of a manual disk ejecting mechanism is disclosed. The operation is very similar to the one as shown in FIG. 1, despite the driving motor and the speed

reduction transmission mechanism

32 are arranged differently on the frame 31. In this conventional design, the speed reduction transmission mechanism 32 comprises a first gear 321 driven by a driving motor, and a second gear 322 driven by the first gear 321 so as to move a slot-in type disk clamping apparatus 33.

As a result of the limited space on the

frame

31 and the disposition of the entire construction, the manual disk ejecting mechanism is a screw rod 34 installed on one side of the frame 31 for driving the first gear 321 to rotate. When the driving motor does not operate normally or fails to function, one can use a tool such as a screw driver to rotate the screw rod 34, drive the first gear 321 and then make the disk clamping apparatus 33 to eject the disk. However, such a design still has some disadvantages. One of the drawbacks is that the screw rod 34 is installed on one side of the frame 31 inside the housing 30. Although there is no hole disposed on the operation panel of the housing 30 as the one shown in FIG. 1 so that the appearance is not be altered. When the manual disk ejecting is required, users need to disassemble the housing 30 first because it does not allow the user to drive the screw rod 34 externally. Another drawback is that the gear ratio between the screw rod 34 and the first gear 321 is so high that for rotating the first gear 321 with one turn, the screw rod 34 needs to be rotated with several turns. As a result, it is time-consuming when manually ejecting a disk, as the screw rod 34 needs to be rotated a great number of turns.

SUMMARY OF THE INVENTION

A primary object of the invention is to present an optical drive loader with a manual disk ejecting mechanism which does not affect the appearance of the operation panel and does not require dismantle the housing for ejecting a disk so as to make it simple to be used.

The optical drive loader with a manual disk ejecting mechanism according to the present invention includes a frame, a disk receiving apparatus, a speed reduction apparatus, a driving apparatus, and a disk ejecting actuating part. Relying on the disk ejecting actuating part positioned on the frame, which is provided with a gear portion for driving the speed reduction apparatus and a roll stem portion positioned at the center of the gear portion extruding along the central axis.

When the driving apparatus does not operate normally or fails to function, users can use a tool going through a through hole of the housing turning the roll stem portion to rotate the gear portion and enable the speed reduction apparatus to move the disk receiving apparatus to the feeding/ejecting position. A through hole is disposed on the housing corresponding to the roll stem portion, so as to avoid the through hole being disposed on the operation panel to affect the appearance of the operation panel. Also, users are allowed to stick a tool going through the through hole for turning the disk ejecting actuating part so as to achieve the effect that it is not necessary to dismantle the housing for ejecting the disk manually.

BRIEF DESCRIPTION OF THE DRAWINGS

The following detailed description, given by way of an example and not intended to limit the invention to the embodiments described herein, will best be understood in conjunction with the accompanying drawings, in which: [0016]
FIG. 1 is a perspective view showing the structure of a conventional CD player loader having a manual disk ejecting mechanism; [0017]
FIG. 2 is a perspective view showing the structure of another conventional CD player loader having a manual disk ejecting mechanism; [0018]
FIG. 3 is a perspective view showing the structure of a preferred embodiment of an optical drive loader having a manual disk ejecting mechanism according to the present invention; [0019]
FIG. 4 is a perspective view of a partial structure of the preferred embodiment illustrating the relationship between the positions of the disk ejecting actuating part and the speed reduction apparatus; [0020]
FIG. 5 is a perspective view of the disk ejecting actuating part of the preferred embodiment; [0021]
FIG. 6 is a perspective view showing the transmission connection between the disk ejecting actuating part and the first gear of the preferred embodiment; and [0022]
FIG. 7 is a perspective view showing the relation between the positions of the disk ejecting actuating part and the first gear of the preferred embodiment when they are not coupled together. [0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Refers to FIG. 3 showing the structure of a preferred embodiment of a [0024] CD player loader 5 having a manual disk ejecting mechanism according to the present invention. The CD player loader 5 is installed in a housing 40 of a CD player. The housing 40 has a panel 401 for users to operate thereon and there is an insertion slot 402 on the panel 401 for feeding/ejecting a compact disk. The loader 5 comprises a frame 51, a disk receiving apparatus 52, a speed reduction apparatus 53, a driving apparatus 54, and a disk ejecting actuating part 55.
The [0025] frame 51 is installed in the housing 40 and is shaped in accordance with the whole mechanism design. The disk receiving apparatus 52 may be a slot-in type disk clamping apparatus or a tray-in type. In the preferred embodiment, it is a slot-in type disk clamping apparatus for holding and positioning a compact disk. The slot-in type disk clamping apparatus is slidingly coupled to the frame 51 such that the disk receiving apparatus 52 is movable between the feeding/ejecting position 402, which is close to the insertion slot 402 of the housing 40, and a data reading position, which is far away from the insertion slot 402. A rack 521 is installed on the disk receiving apparatus 52 along the moving direction of the disk receiving apparatus 52.
A [0026] speed reduction apparatus 53 is installed on the frame 51 for driving the disk receiving apparatus 52. In the preferred embodiment, the speed reduction apparatus comprises at least a first gear 531, a second gear 532 which is engaged with the rack 521 of the disk receiving apparatus 52 and driven by the first gear 531. In the preferred embodiment, the first gear 531 is formed with a first circular gear portion 5311 on outer edge with more teeth and a second circular gear portion 5312 with less teeth which is coaxial with the first circular gear portion 5311 and extends outward. The first gear 531 transmits the rotation motion to the second gear 532 by means of a first speed reduction gear 533 and a second speed reduction gear 534, which is driven by the first speed reduction gear 533.
The driving [0027] apparatus 54 is positioned on the frame 51 for supplying power to the speed reduction apparatus 53. In the preferred embodiment, the driving apparatus 54 is a driving motor, which is used to drive the first gear 531 and then make the second gear 532 to drive the rack 521 of the disk receiving apparatus 52 such that the disk receiving apparatus 52 can move linearly.
The disk ejecting actuating [0028] part 55 is also positioned on the frame 51 as shown in FIG. 4. In the preferred embodiment, the disk ejecting actuating part 55 is positioned under the first gear 531 for cooperating to the extending direction of the second circular gear portion 5312 of the first gear 531. Referring to FIG. 5 to FIG. 7, the disk ejecting actuating part 55 comprises a gear portion 551 which drives the second circulation portion 5312 of the first gear 531, and a roll stem portion 552 which positions at the center of the gear portion 551 and extrudes outward along the central axis. The roll stem portion 552 is positioned on the frame 51 and appeared under the frame 51., A proper slot 5521 is formed as shown in FIG. 5, which is a cross slot. A through hole 41 is disposed on the housing 40 corresponding to the roll stem portion 552.
When operating normally, the rotation direction of the driving [0029] apparatus 54 is controlled electronically as a conventional CD player is controlled. The rotation speed of the driving apparatus 54 is reduced by means of the speed reduction apparatus 53. The rotation motion is transferred to linear motion by the rack 521 of the disk receiving apparatus 52 so as to move the Compact disks held on the disk receiving apparatus 52 forward and backward between the feeding/ejecting position and the data reading position.
When the driving [0030] apparatus 54 does not operate normally or fails to function, users may stick a cross screw driver, a flat screw driver, or the like, going through the through hole 41 to couple with the slot 5521 of the roll stem portion 552 and turning the roll stem portion 552 to rotate the gear portion 551. The gear portion 551, instead of the driving apparatus 54 drives the second circular gear portion 5312 of the first gear 531 to move the disk receiving apparatus 52 to the feeding/ejecting position. When the disk receiving apparatus 52 is in feeding/ejecting position, the users then are allowed to remove the compact disk. As a result, without dismantling the housing 40, a compact disk manual ejecting can be easily achieved.
Moreover, because the axis of the disk ejecting actuating [0031] part 55 is parallel with the one of the first gear 531, the disk ejecting actuating part 55 is then perpendicular to the moving direction of the disk ejecting receiving apparatus 52 such that the through hole 41 that is provided for cooperating to the roll stem portion 552 of the disk ejecting actuating part 55 is not required to be positioned on the operation panel 401 of the housing 40. The through hole 41 in accordance with the preferred embodiment is positioned on the bottom of the housing 40 so that the appearance of the whole operation panel 401 is not be altered.
When a user executes the manual disk ejecting operation, the user is allowed to stick a tool going through the through [0032] hole 41 on the bottom of the housing 40 and turning the disk ejecting actuating part 55 without dismantling the house 40. Further more, the transmission proportion of rotation speed between the gear portion 551 of the disk ejecting actuating part 55 and the second circular portion 5312 of the first gear 531 is minor. In other words, the present invention offers a power saving means for ejecting compact disks and avoids the extra labor required when using a screw rod to eject a disk in the prior art as a result of low the transmission rotation speed.
When operating normally, in order to prevent the disk ejecting actuating [0033] part 55 and the first gear 531 from being cogged which may generates transmission resistance of the speed reduction apparatus 53 and noise. As shown in FIG. 4, a smooth toothless region 5511 is formed on the edge surface of the gear portion 551 of the disk ejecting actuating part 55. At a corresponding position on the frame 51, a positioning pair 553 is disposed on the surface of the gear portion 551 facing the frame 51. In the preferred embodiment, the positioning pair 553 comprises a bump 5531 and a corresponding shallow recession 5532, the bump 5531 is formed on the surface of the gear portion 551 and the shallow recession 5532 is formed on the frame 51. When the driving apparatus 54 operates normally, the bump 5531 is coupled to the shallow recession 5532, as shown in FIG. 7, to provide an interference force such that the gear portion 551 is rotated to a specific orientation to prevent the toothless portion 5511 and the second circular gear portion 5312 from being cogged.
In summary, the [0034] CD player loader 5 with a manual disk ejecting mechanism according to the present invention in which the disk ejecting actuating part 55 has the advantages of simple design, easy operation, low manufacturing cost. The operation is accomplished without dismantling the housing 40 within a short time. The present invention does not alter the appearance of the panel 401 of the housing 40 and as a result substantially enhances the competitiveness of the product in the market.
While the invention has been described with reference to various illustrative embodiments, the description herein should not be construed in a limiting sense. Despite the foregoing detail description relates to CD players, which are taken as a household electronic device; however, the present invention can also apply to a CD-ROM drive used in computers. Various modifications of the illustrative embodiments, as well as other embodiments of the invention, will be apparent to those skilled in the art upon reference to this description. It is therefore contemplated that the appended claims will cover any such modifications or embodiments as may fall within the scope of the invention defined by the following claims and their equivalents. [0035]

Claims

What is claimed is:

1. An optical drive loader with a manual disk ejecting mechanism installed in the housing of an optical drive, wherein the housing has a panel provided for a user to operate thereon and the panel has an insertion slot provided for feeding/ejecting a disk, said loader comprising:

a frame installed in the housing;

a disk receiving apparatus slidingly coupled to the frame and movable between a feeding/ejecting position close to the insertion slot and a data reading position away from the insertion slot;

a speed reduction apparatus installed on the frame for driving the disk receiving apparatus;

a driving apparatus positioned on the frame for supplying power to the speed reduction apparatus to move the disk receiving apparatus toward the feeding/ejecting position or the data reading position; and

a disk ejecting actuating part positioned on the frame, including a gear portion for driving the speed reduction apparatus and a roll stem portion coaxial with the gear portion extruding along the central axis, a through hole disposed on the housing corresponding to the roll stem portion, when the driving apparatus does not operate normally, without dismantling the housing, the disk is ejected manually via sticking a tool going through the through hole of the housing, turning the roll stem portion to rotate the gear portion and enable the speed reduction apparatus to move the disk receiving apparatus to the feeding/ejecting position.

2. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 1, wherein the disk receiving apparatus comprises a rack installed along its moving direction, the speed reduction apparatus comprises at least a first gear and a second gear, the first gear is driven by the driving apparatus, the second gear is driven by the first gear and engaged with the rack, such that the disk receiving apparatus is driven by the driving apparatus.

3. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 2, wherein the gear portion of the disk ejecting actuating part comprises a smooth toothless region formed on the edge surface of the gear portion, when the driving apparatus operates normally, the toothless region is positioned at a specific rotation orientation to prevent the gear portion and the first gear from being cogged.

4. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 3, wherein the disk ejecting actuating part comprises a positioning pair to prevent the gear portion and the first gear from being cogged when the driving apparatus operates normally.

5. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 4, wherein the positioning pair comprises a bump and a corresponding shallow recession, the bump is formed on the surface of the gear portion and the shallow recession is formed on the frame, and the bump coupled to the shallow recession to provide an interference force to prevent the gear portion and the first gear from being cogged.

6. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 1, wherein the disk receiving apparatus is a slot-in type disk clamping apparatus.

7. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 1, wherein the disk receiving apparatus is a tray.

8. The optical drive loader with a manual disk ejecting mechanism as claimed in claim 1, wherein the driving apparatus is a servo-motor.